[PATCH v4 0/5] powervr: MT8173 GPU support

[AngeloGioacchino Del Regno]

On 7/30/26 06:51, Chen-Yu Tsai wrote:
> On Tue, Jul 28, 2026 at 10:33 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno at collabora.com> wrote:
>>
>> On 7/28/26 15:13, Chen-Yu Tsai wrote:
>>> On Tue, Jul 28, 2026 at 9:10 PM Brian Masney <bmasney at redhat.com> wrote:
>>>>
>>>> Hi Chen-Yu,
>>>>
>>>> On Tue, Jul 28, 2026 at 05:17:58PM +0800, Chen-Yu Tsai wrote:
>>>>> Hi everyone,
>>>>>
>>>>> This is v4 of my MT8173 PowerVR GPU support series.
>>>>>
>>>>> This time around Mesa was ready for basic testing, using both vulkanmark
>>>>> and glmark2-es2-drm (with Zink). Details below.
>>>>>
>>>>> Changes since v3 (all in the clk driver patch):
>>>>> - Changed pm_runtime_put() to pm_runtime_put_sync()
>>>>> - Added missing of_node_put() in remove function
>>>>>
>>>>> Changes since v2 (all in the clk driver patch):
>>>>> - Made COMMON_CLK_MT8173_MFGTOP depend on PM
>>>>>     - Needed since the driver implements PM domains using the generic PM
>>>>>       domain library, which also depends on PM
>>>>>     - Fixes build breakage (kernel test robot)
>>>>> - Fixed "RST_DELAY_CNT" name (Brian)
>>>>> - Dropped unused mfg_desc (Brian)
>>>>> - Added check of clk_prepare_enable()'s return value in
>>>>>     clk_mt8173_mfgtop_power_on() (Brian)
>>>>> - Saved error value for return in IS_ERR(data->clk_26m) branch
>>>>>     (Dan Carpenter / kernel test robot w/ smatch)
>>>>>
>>>>> Changes since v1:
>>>>> - Adapted to changed DT bindings
>>>>> - Dropped driver change
>>>>> - Use same power domain for "a" and "b" GPU power domains
>>>>>
>>>>>
>>>>> This series enables the PowerVR GPU found in the MT8173 SoC, found in
>>>>> some Chromebooks.
>>>>
>>>> I'm making a pull for Stephen for the clk changes. Should patches 1,2,4
>>>> go through the clk tree? Patches 3,5 go through the DRM tree?
>>>
>>> Only patches 1 and 2 should go through the clock tree.
>>>
>>> Patch 3, 4, 5 can all go through the soc tree if Angelo wants to pick up
>>> DT binding patches. Otherwise I can push patch 3 through drm-misc.
>>>
>>
>> Not sure if I can really take the DRM bindings patch through soc.
>>
>> I will take the devicetree ones exactly right now, even though it's going to
>> give warnings.
> 
> Apologies for missing this, but the first DT patch depends on the clk DT
> bindings patch for the clk ID macros. This is causing build errors in
> linux-next right now.
> 
> Not sure how we can fix this right now.
> 
> Brian, would it be possible for you to split out that patch into a
> separate immutable branch for Angelo to merge?
> 
> Otherwise Angelo might need to drop the DT patches until the next cycle.
> 
> 
Yeah, that's so bad.
I'd be happy to be able to resolve this, but it's too late on my side.

I should've checked the DT patches more carefully, my bad: I got a bit too excited
to finally see this PowerVR stuff working on MT8173 and going upstream.

Sadly, I have to drop the devicetree patches :-(

Cheers,
Angelo